This furnace high limit switch prevents equipment damage and potential safety hazards by maintaining strict air temperature control during the heating cycle

it is engineered to withstand high temperatures and resist corrosion from combustion byproducts

the 195B0636 SC21G is rated for 220-240V at both 50Hz and 60Hz

This is a deliberate safety feature that requires a physical reset after a trip to ensure the cause of the overheat is addressed by a professional

Carrier HH18HA191 Control 322057-301 This furnace high limit switchThe Carrier HH18HA191 Temp Actuated Control is a critical high limit switch designed for HVAC safety and performance. As a Factory Authorized Part, this SPST disc style switch provides reliable circuit interruption when system temperatures exceed safe operating thresholds, preventing potential thermal damage to heat exchangers and internal components. Engineered for seamless integration, it is rated for 5A at 240 VAC and 10A at 120 VAC, utilizing